import java.util.*;

public class MapTest {
    public static void main(String[] args)
    {
        Map<String, Employee> staff = new HashMap<>();
        staff.put("144-25-5464", new Employee("Amy Lee", 12, 1994, 2, 2));
        staff.put("567-24-2546", new Employee("Harry Hacker", 12, 1994, 2, 2));
        staff.put("157-62-7935", new Employee("Gary Cooper", 12, 1994, 2, 2));
        staff.put("456-62-5527", new Employee("Francesca Cruz", 12, 1994, 2, 2));

        System.out.println(staff);

        staff.remove("567-24-2546");

        staff.put("456-62-5227", new Employee("Francesca Miller", 12, 1994, 2, 2));

        System.out.println(staff.get("157-62-7935"));
    }
}
